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Test your basic knowledge |
Dairy Cattle And Reproduction
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Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
hypothalamus and pituitary gland
6-8 weeks
reason for seasonal breeding periods
Follical Stimulating in females
2. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
6-8 weeks
monestrous
Dairy Cattle Lactation (standard)
3. 283 days
Parturition
dairy cattle pregnancy check
cow gestation
things to check for in a breeding soundness exam (BSE)
4. Duct through penis that carries sperm and urine
scrotum
urethra
dry-off time in dairy cattle
Sperm survival specs
5. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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6. FEED
seminiferous tubules
behavioral signs of estrus
#1 cost in production
estrous
7. Sperm production
spermatogenesis
ewe estrus cycle
Bull's fibro-elastic penis
pelvis
8. Way to know everything is alright with the breeding male
mare estrus cycle
purpose of Breeding Soundness Exam (BSE) for males
feeding a high producing dairy cow
hypothalamus and pituitary gland
9. When are steers and heifers weaned from bottle feeding?
mare gestation
6-8 weeks
sow estrus
Follical Stimulating in males
10. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
penis proper
monestrous
behavioral signs of estrus
leydid or interstitial cells
11. Animals which have only one estrous cycle (ex: dog - fox)
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
penis sizes vs delivering methods
monestrous
cow estrus cycle
12. Important 'landmark' during palpation
Dairy Cattle Lactation (standard)
cervix
prostaglandin
estrous
13. 10-37 (21) days
testosterone
mare estrus cycle
spermatogenesis
eminal vesicles
14. Days which have increasing daylight hours
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15. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
Reasons for gestation length being affected
sigmoid flexure
Lutinizing Hormone in males
penis sizes vs delivering methods
16. Front feet and head first. (except for hogs and dogs)
scrotal circumference (BSE)
colostrum
normal presentation of the fetus
mare ovulation
17. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Parturition
cow gestation
Mares
dairy cattle pregnancy check
18. 265-285 days
mare ovulation
sow estrus cycle
Dairy Cattle Gestation
1. more cost effective - 2. powdered milk is in excess production
19. Contains and regulates the temp of the testes for sperm production
prostate gland
reason for seasonal breeding periods
scrotum
4 major reasons for culling dairy cows
20. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
purpose of Breeding Soundness Exam (BSE) for males
estrous
Avg. bull specs
why does the cow need fat deposits during pregnancy?
21. 1-3 days
cow gestation
Reasons for gestation length being affected
sow estrus
testis (gonads)
22. What makes the milk flow through the mammary glands?
Blood
elastrator
normal presentation of the fetus
age and castration
23. (switzerland) 2nd in size and milk production - most muscle -
spermatogenesis
Mares
Brown Swiss Cow
sigmoid flexure
24. 19-23 (21) days
cow ovulation
sow estrus cycle
van deferens
accessory sex glands
25. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
monorchid
Jersey Cow
burdizzo
cow estrus cycle
26. Urinary calculi.
sow gestation
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Hard
age and castration
27. Days which have increasing daylight hours
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28. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
testosterone
#1 cost in production
Dairy calves are removed from cow at birth to...
29. 14-19 (17) days
Sperm survival specs
ewe ovulation
ewe estrus cycle
femininity of a heifer
30. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
behavioral signs of estrus
semen evaluation (BSE)
ewe's estrous cycle
sigmoid flexure
31. Can survive ~7 days in cow. vast majority <48 hours
Sperm survival specs
estrous
Bull's fibro-elastic penis
purpose of Breeding Soundness Exam (BSE) for males
32. 4-6 days
mare ovulation
urethra
mare estrus
~1 month
33. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
epididymis: definition - 3 parts - 4 functions
reason for seasonal breeding periods
Holstein Cow
reason for seasonal breeding periods
34. The more stressed out the male is - the less sperm he is going to produce
Jersey Cow
humans: stress level vs sperm
colostrum
Holstein Cow
35. 283 days
Hormones from both the fetus and the mom.
#1 cost in production
cow gestation
vulva
36. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
feeding a high producing dairy cow
functions of progestrone
stag
ewe estrus
37. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
Avg. bull specs
growth lost from castration methods (knife & band)
Dairy calves are removed from cow at birth to...
38. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
effects of estrogen
growth lost from castration methods (knife & band)
cow estrus
cowper's gland
39. Contains and regulates the temp of the testes for sperm production
1. more cost effective - 2. powdered milk is in excess production
feeding a high producing dairy cow
Hormones from both the fetus and the mom.
scrotum
40. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Blood
mare ovulation
testis (gonads)
41. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Dairy Cattle Gestation
epididymis: definition - 3 parts - 4 functions
Avg. bull specs
hormones
42. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
Grading choice
dairy cattle pregnancy check
semen evaluation (BSE)
43. Failure to have one testis (gonad) to descend
Reasons for gestation length being affected
reasons for castration
sigmoid flexure
monorchid
44. Microscopic - make sure not sterile - very few bulls are actually tested
reason for seasonal breeding periods
Dairy Cattle Lactation (standard)
Blood
semen evaluation (BSE)
45. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
effects of BST
kidney stones also called ________ ___________ can develop in the sigmoid flexure
epididymis: definition - 3 parts - 4 functions
Dairy Cattle Lactation (standard)
46. 30-38 hours after estrus cycle begins
ewe's estrous cycle
Dairy calves are removed from cow at birth to...
dry matter and water
sow ovulation
47. Produce testosterone. located between the seminiferous tubules
Culls bulls earlier (2 reasons)
leydid or interstitial cells
libido test (BSE)
Parturition
48. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
prostate gland
cryptorchid
Size of cow in relation to the amount of milk produced
pelvis
49. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
~1 month
6-8 weeks
behavioral signs of estrus
reason for seasonal breeding periods
50. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
monorchid
monorchid
behavioral signs of estrus
hypothalamus and pituitary gland
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